99020020 has 48 divisors (see below), whose sum is σ = 238795200. Its totient is φ = 34110720.

The previous prime is 99020017. The next prime is 99020027. The reversal of 99020020 is 2002099.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 99019973 and 99020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99020027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7665 + ... + 16024.

It is an arithmetic number, because the mean of its divisors is an integer number (4974900).

Almost surely, 2^99020020 is an apocalyptic number.

It is an amenable number.

99020020 is an abundant number, since it is smaller than the sum of its proper divisors (139775180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99020020 is a wasteful number, since it uses less digits than its factorization.

99020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23728 (or 23726 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 99020020 is about 9950.8803630634. The cubic root of 99020020 is about 462.6376819214.

The spelling of 99020020 in words is "ninety-nine million, twenty thousand, twenty".